All entries for Tuesday 04 August 2015
August 04, 2015
HDC project FV 416b – cabbage root fly egg counts from Cornwall
The egg counts up to Monday 3rd August are as follows - they show the mean numbers of eggs per plant per week found around a sample of 20 plants per location:
| Helston | Hayle | Gwithian | Truro | St Columb | |
| 20-Apr | 0.2 | 1.2 | 0.3 | 0.3 | 0.9 |
| 27-Apr | 0.9 | 12.0 | 2.1 | 1.2 | 18.0 |
| 05-May | 0.8 | 12.2 | 8.2 | 4.0 | 4.1 |
| 11-May | 2.6 | 20.1 | 2.8 | 3.1 | 5.7 |
| 18-May | 4.7 | 17.1 | 1.7 | 5.6 | 19.8 |
| 25-May | 2.3 | 7.4 | 0.4 | 0.7 | 18.4 |
| 01-Jun | 0.3 | 4.1 | 1.1 | 0.9 | 0.9 |
| 08-Jun | 0.6 | 5.4 | 0.3 | 0.2 | 1.0 |
| 15-Jun | 0.3 | 2.2 | 0.5 | 0.3 | 1.4 |
| 22-Jun | 0.7 | 4.6 | 0.8 | 0.5 | 0.4 |
| 29-Jun | 2.15 | 3.85 | 0.25 | 0.95 | 1.15 |
| 06-Jul | 2.3 | 0.55 | 0.4 | 1.8 | 2.6 |
| 13-Jul | 3.95 | 0.8 | 0.8 | 12 | 0.45 |
| 20-Jul | 1.05 | 0.3 | 1.7 | 1.15 | 0.4 |
| 27-Jul | 0.45 | 0.65 | 0.05 | 0.4 | 0.95 |
| 03-Aug | 1.9 | 1.55 | 0.15 | 0.5 | 1.1 |
Rosemary Collier
04 Aug 2015 21:00
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Aphid and Turnip yellows virus News
Brassica virus and peach potato aphid update from Wellesbourne, Warwickshire:
- 23-27/07/2015, 5 individuals of M. persicae were caught (12 yellow water traps), none of these were carrying TuYV.
- 27-30/07/2015, 1 individual of M. persicae was caught (12 yellow water traps), this individual was not carrying TuYV.
- 20-26/07/2015, From the Rothamsted Insect Survey suction trap catch, 1 M. persicae was identified, this individual was carrying TuYV.
Brassica virus and peach potato aphid update from Kirton, Lincolnshire:
- 23-27/07/2015, 1 individual of M. persicae was caught (12 yellow water traps), this individual was carrying TuYV.
- 27-30/07/2015, no M. persicae were caught (12 yellow water traps).
- 20-26/07/2015, From the Rothamsted Insect Survey suction trap catch, 4 M. persicae were identified, 3 individuals were carrying TuYV.
Turnip Yellows Virus (TuYV), formerly known as Beet western yellows virus, is a very important pathogen of vegetable brassicas and oilseed rape. It is spread by the peach potato aphid (Myzus persicae). This data is collected with funding from the BBSRC Horticulture And Potato Initiative (HAPI).
Press release on the new round of HAPI projects involving the University of Warwick
Diana Katschnig and Angela Hambidge, Plant-Virus Interactions Group, University of Warwick
Diana Katschnig
04 Aug 2015 11:07
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Tags: Aphid Tuyv
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